Talking-machine.



o. 879,755. PATENTBD FEB. 18, i908. v A. FISCHER.

TALKING MACHINE. APPLIATION FILED DBO. 29.1906.

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4- To all 'whom 'it mag/ concerm Beit kn'own that I, ALEX FISCHER, a 'subjectof theKin Hazlitt road,` ensington, in the county of London, En land, have invented certain new. and useful mprovements in or vRelating to, Talkin -Ma'chi-nes; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will 'enable ot ers skilled in the art to which it appertains to make and use the same. I

My invention relatesv to an improvement in talking machines, and the object of my invention is to Jmake a tight, flexible and universal joint between the tone-arm and trumpet.

. movement on pivotsl cannot lfollow the The existing tone `arms of .talking ma' chines having only a horizontal and vertical grooves throughout, the movement thus obtained being anangular one along. the curves "of the grooves it follows that the stylus (needlfe) "can only touch the grooves at certain points.

Joints constructed as hereafter described will allow the movable part of the joint (tone `arm)gto move in any direction, that is,up

' and down and to any oblique angle andthus' the sound box stylus will 'travel in the grooves lwithout jerks, -not Inissingany indentations and roducing a sustained rich tne of fine qua ty and shading.

According to this invention, at one end of the two ipesto be connected, I form or fix an annu ar flange of spherical curvature so that it forms a concave seating. otherpipe I also form or fix an annular flange of spherical curvature so that it forms a convex flange which fits exactly against the concave seating of the other pipe. The concave seating is of larger spherical section than the convex flange. The under portion of the convex flange 1s concentric with the top part of E:the flange and with the faces of' the concave seating, the three spherical surfaces hav.-

ingsone common center.

Suitable means are provided for keeping convex and concave surfaces of the flanges in close contact inall )ositions into which the joint can move. An in order that this invention may be understood I will proceed to describe the same with reference to the drawings accompanying this specification, in which:-

Figure 1 shows in vertical section the joint between the lone-arm and Specification of Letters Patent. f Application nea December 29, ieo. serai No. 350.0145

of.. England, residing at 18 7 vshows a construction On' the disk or'cylin er talking machines Inlay fix trcinpet of a',

Patenteabis, 190s sa detailthereofiff Fig. 3 shows a form of ,the'invention 'infwhich 'the motion is universal; {L sf Ac'iwsel tion. of adisk phonograph rfittl proved tone arm; Fig. 5 "sho one means of fitting my to a A'cylinder phonograp another form of my joint- `as.

ablefor a tone arm of talking talking machine L' yI Figv.,

the addition of lugs herei afl .rf j j Thesa'me letters of reference are lemploy to denote the same partsin allythe views.,y

a is a pipe terminating infth'e usialftruin- 70 et. 'b is an annular flange:formed'fvv'ithlor1 attached tothe pipe a andprovide'd wit spherical concave surfa fY mi'rgtlie ing.' i is another pipe, kpr with a flange e. 'lhis'fl'a surface which is of simi, l turev to the surface c ofth` closely in contact therewith.' 'The'flange eis provid ed at the back with two short grooves g as shown in the plan of the .back "cif this flange at Fig. 2 to prevent motion of the -arm in the plane of the paper. his a ring furnished with an annular groovei, or it is obvi#` yous that I may have the annular groove L on "the under side ofthe flange e and the two shorhgrooves gonthering h.- The ring h may be attached to the flange b byscrewing or otherwise. are balls resting in the ygrooves g and the annular groove i. It will be seen thatby this arrangement the arm dl can have a motion of complete rotation given toit and every motion except one in the plane of the Japer. In'using this joint foi to such joint eitherataper tubular arm or a parallel tubular arm or a tubular arm par. tially tapered and artially parallel, to form what is known in tlie trade as the tone arm, Fig; 3 shows a form of the invention in which the.,` motion is universal and., not restricted in any direction.. In this case, the construction is precisely similar to that shown in Fig. ll, but the surfaeeic'at the back of the flange e on the pipe d is also. spherical but without -the grooves `g..and concentric with the surfaces b and e. It can be kept in j position by the spherical surface` of the ring Z (which has no groove e) or by other means and attached .to the flange l) by means of screws or otherwise. If desired the side motion in the plane of the paper can also be prevented by' fniing two lugshs' opposite to one another on' the edge ofthe flange e as shown in Fig. 7. i m shows the bracket attached to the casing of the machine which I prefer to fit so as to be capable of horizontal adjustmentv as shown. This Imayefiect by having the arm 4 portion fn of the bracket m provided IwithV a providedwit slot o through fitted to 'or formed with the traverse carriage.

'I othe u' per end yof this bracket 7' is fitted the carrying the pi e or tone arm d, in

the upper portion of whic is fixed the trumpet as shown in Figs. 4 and 5. What I claim and desire to secure by Lettersv Patent. of the United lStates Aof America 1. In ,a talking f of a vtone arm having a flange'at its 'extreme fend, a trumpet having a corresponding flange at its extreme end, and a ca extending from one flange around the end o the other flange and supporting it on the opposite side,. but leaving an rintermediate space for free movement, substantially 'as described. n

machine, the 'combination v2. In a talking machine, the combination of a tone arm having a convex annular ilange at its extreme end, a trumpet havin a similarly shapedQbut concave, annular ange at its extreme end and adapted to fit over said first named ange, a cap fastened to and ex tending from one `flange around the edge of theother flange and supporting it on the opposite side, ut leaving an intermediate s. ace for free movement, substantially as escribed. v y

l 3. In atalkin machine, the combination of a' tone arm aving an annular convex flan e at its extreme end, a trumpet having a simi arly shaped but concave annular flange at its extreme end, and adapted to fit against said firs-t named flange, a ca fastened to and extending from oneof 'sai the edge of the other Harige and supporting it on the opposite side, but diate space for free motion, and anti-friction devices between said'n 'ca y and one of said flanges, substantially as escribed.

In testimony whereof, I afiix my signature in presence of two witnesses.

' -A ALEX FISCHER.

Witnesses: v i

A. Bnownn,l H. D. JAMESON.

fianges around caving' an interme- 

